The Locker tab lets you view and download files from your teacher. Just click a file to download it. You might need some outside programs to open it, depending on the file.
You can also copy these course files to your locker by checking the box next to a file and clicking Copy.
You can't edit, rename or delete things in the course locker, but there are other ways if you need to send a file to your teacher. You can see our page about submitting work.